1. Jack up the vehicle and place the safety stands under the frame.
2. Remove a transmission.
3. Remove the fluid sump.
4. Remove the valve block.
5. Using pliers, remove the pins indicated in the figure.
6. Remove the axle of the start inhibit switch lever.
7. Using a puller, remove the oil seal from the gearbox housing.
8. Using a mandrel, install a new oil seal.
9. Install the remaining parts in the reverse order of removal.